EP 0502990 A4 19930107 - IMMOBILIZATION OF INCINERATOR ASH TOXIC ELEMENTS IN AN ENVIRONMENTALLY SAFE SOIL CEMENT COMPOSITION AND METHOD OF MANUFACTURE
Title (en)
IMMOBILIZATION OF INCINERATOR ASH TOXIC ELEMENTS IN AN ENVIRONMENTALLY SAFE SOIL CEMENT COMPOSITION AND METHOD OF MANUFACTURE
Publication
Application
Priority
US 44739889 A 19891207
Abstract (en)
[origin: WO9108990A1] A composition, suitable for use as a base in the construction of roads, and other areas, is formulated from an ash-aggregate comprising municipal solid waste incinerator ash, MSWIA, mixed with an aggregate material. Upon the addition of cement, compaction, and curing, a volumetrically stable solid is formed. All particles greater than 3/8'' are removed from the ash-aggregate material prior to the addition of cement. The stable solids immobilize heavy metals in the MSWIA. Incinerator ash, sufficiently small to fit through two inch screen (1) passes into ash bin (3). Belt (5) carries the ash (4) toward mixing chamber (10). This feeds on to screen (26). Streams (34) and (50) are combined in bin (54) and cement (60) is added. The combination is mixed, (72) and is ready for transport.
IPC 1-7
IPC 8 full level
C04B 7/26 (2006.01); C04B 18/08 (2006.01); C04B 28/04 (2006.01); E01C 3/00 (2006.01)
CPC (source: EP US)
C04B 18/10 (2013.01 - EP US); C04B 28/04 (2013.01 - EP US); E01C 3/003 (2013.01 - EP US); C04B 2111/0075 (2013.01 - EP US); Y02W 30/91 (2015.05 - EP US)
Citation (search report)
- [X] US 4804147 A 19890214 - HOOPER WILLIAM F [US]
- [YP] EP 0380713 A1 19900808 - RHEINISCHE BAUSTOFFWERKE GMBH [DE]
- [A] NL 8202014 A 19831201 - BASISMATERIALEN NIEUWERKERK B
- See references of WO 9108990A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
WO 9108990 A1 19910627; AU 6907091 A 19910718; CA 2068209 A1 19910608; CA 2068209 C 19951107; EP 0502990 A1 19920916; EP 0502990 A4 19930107; JP H05508376 A 19931125; US 5061318 A 19911029; ZA 909761 B 19911030
DOCDB simple family (application)
US 9007078 W 19901207; AU 6907091 A 19901207; CA 2068209 A 19901207; EP 91901211 A 19901207; JP 50158691 A 19901207; US 44739889 A 19891207; ZA 909761 A 19901205